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Proteins have primary structure. If you ...

Proteins have primary structure. If you are given a method to know which amino acid is at either of the two termini (ends) of a protein, can you connect this information to purity or homogeneity of a protein ?

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If there is one type of amino acid at both termini then it is homopolymer and it can not be a pure protein when there are different amino acids on both termini then it is pure protein as protein are heteropolymer. This property of protein is because of presence of 21 types of amino acids.
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